In a shop, the number of post-it pads was
712 of the total number of post-it pads and glues together. Warren sold the post-it pads and glues in sets of 3 post-it pads and 3 glues. After selling all the glues, he still had 36 post-it pads left. How many glues were in the shop were sold?
| |
Post-it Pads |
Glues |
| Before |
7x3 =
21 u |
5x3 =
15 u |
| Change |
- 3x5 =
- 15 u |
- 3x5 =
- 15 u |
| After |
36 |
0 |
Since all the glues were sold, the number of glues at first and the number of glues sold were the same. Make the number of glues at first and sold the same. LCM of 5 and 3 is 15.
Number of post-it pads sold
= 21 u - 15 u
= 6 u
6 u = 36
1 u = 36 ÷ 6 = 6
Number of glues were sold
= 15 u
= 15 x 6
= 90
Answer(s): 90
